Legal claims defining the scope of protection. Each claim is shown in both the original legal language and a plain English translation.
1. A terminal apparatus configured to communicate with a base-station apparatus, the terminal apparatus comprising: receiving circuitry configured to receive control information used for a scheduling of a Physical Uplink Shared Channel (PUSCH); and transmitting circuitry configured to report partial precoder information that specifies at least one preferred candidate from among a plurality of candidates of precoders, the partial precoder information being reported together with data from the terminal apparatus on the PUSCH, wherein in a case that the partial precoder information is to be aperiodically reported, modulation symbols of the partial precoder information and modulation symbols of the data are interleaved jointly, and in a case that the partial precoder information is to be periodically reported, modulation symbols of the partial precoder information and modulation symbols of the data are interleaved separately.
This invention relates to wireless communication systems, specifically improving the efficiency of precoder feedback in uplink transmissions. The problem addressed is the need for efficient reporting of precoder information from a terminal (e.g., a user device) to a base station to optimize uplink data transmission quality while minimizing overhead. The terminal apparatus includes receiving circuitry to obtain control information for scheduling a Physical Uplink Shared Channel (PUSCH) and transmitting circuitry to report partial precoder information. This partial precoder information identifies at least one preferred precoder candidate from a predefined set, aiding the base station in selecting an optimal precoding matrix for uplink transmissions. The precoder information is transmitted alongside user data on the PUSCH. The invention distinguishes between aperiodic and periodic reporting of precoder information. For aperiodic reporting, modulation symbols of the precoder information and data are jointly interleaved, ensuring efficient multiplexing. For periodic reporting, the modulation symbols are interleaved separately, allowing for more flexible and independent transmission of precoder feedback. This dual-mode approach optimizes resource utilization and feedback accuracy based on the reporting frequency. The solution enhances uplink transmission reliability and spectral efficiency in wireless communication systems.
2. A base-station apparatus configured to communicate with a terminal apparatus, the base-station apparatus comprising: transmitting circuitry configured to transmit control information used for a scheduling of a Physical Uplink Shared Channel (PUSCH); and receiving circuitry configured to receive partial precoder information that specifies at least one preferred candidate from among a plurality of candidates of precoders, the partial precoder information being reported together with data from the terminal apparatus on the PUSCH, wherein modulation symbols of the partial precoder information and modulation symbols of the data are interleaved jointly in a case that the partial precoder information is aperiodically reported, and modulation symbols of the partial precoder information and modulation symbols of the data are interleaved separately in a case that the partial precoder information is periodically reported.
This invention relates to wireless communication systems, specifically improving the efficiency of precoder feedback in uplink transmissions. The problem addressed is the need for efficient reporting of precoder information from a terminal apparatus to a base station to optimize uplink data transmission performance. Precoder information helps the base station select the best transmission parameters for the terminal, but transmitting this data alongside uplink payload can reduce efficiency if not handled properly. The base-station apparatus includes transmitting circuitry to send control information for scheduling a Physical Uplink Shared Channel (PUSCH) and receiving circuitry to obtain partial precoder information from the terminal. This partial precoder information identifies a preferred precoder candidate from a predefined set, enhancing uplink transmission quality. The precoder information is transmitted alongside user data on the PUSCH, with modulation symbols of the precoder information and data interleaved differently based on reporting frequency. For aperiodic reporting, the symbols are jointly interleaved to optimize efficiency, while for periodic reporting, they are interleaved separately to maintain reliability. This adaptive interleaving method ensures efficient use of uplink resources while supporting flexible feedback mechanisms. The invention improves communication efficiency by dynamically adjusting how precoder information is combined with user data in uplink transmissions.
3. A communication method of a terminal apparatus configured to communicate with a base-station apparatus, the communication method comprising: receiving control information used for a scheduling of a physical Uplink Shared Channel (PUSCH); and reporting partial precoder information that specifies at least one preferred candidate from among a plurality of candidates of precoders, the partial precoder information being reported together with data from the terminal apparatus on the PUSCH, wherein in a case that the partial precoder information is to be aperiodically reported, modulation symbols of the partial precoder information and modulation symbols of the data are interleaved jointly; and in a case that the partial precoder information is to be periodically reported, modulation symbols of the partial precoder information and modulation symbols of the data are interleaved separately.
This invention relates to wireless communication systems, specifically improving uplink data transmission efficiency in cellular networks. The problem addressed is the need for efficient feedback of precoder information from a terminal (e.g., a smartphone) to a base station to optimize beamforming while minimizing overhead. Precoding is a technique where the terminal selects a preferred precoder from a predefined set to enhance signal quality, but transmitting this information alongside data can be resource-intensive. The method involves a terminal apparatus communicating with a base station. The terminal receives control information for scheduling uplink data transmission on the Physical Uplink Shared Channel (PUSCH). The terminal then reports partial precoder information, which identifies one or more preferred precoder candidates from a predefined set. This information is transmitted alongside user data on the PUSCH. The key innovation lies in how the precoder information and data are interleaved. For aperiodic reporting (triggered by the base station), the modulation symbols of the precoder information and data are jointly interleaved, ensuring efficient multiplexing. For periodic reporting (scheduled at regular intervals), the modulation symbols are interleaved separately, allowing for more predictable resource allocation. This dual approach optimizes resource usage based on reporting frequency, improving overall system efficiency.
4. A communication method of a base-station apparatus configured to communicate with a terminal apparatus, the communication method comprising: transmitting control information used for a scheduling of a Physical Uplink Shared Channel (PUSCH); and receiving partial precoder information that specifies at least one preferred candidate from among a plurality of candidates of precoders, the partial precoder information being reported together with data from the terminal apparatus on and the PUSCH, wherein modulation symbols of the partial precoder information and modulation symbols of the data are interleaved jointly in a case that the partial precoder information is aperiodically reported, and modulation symbols of the partial precoder information and modulation symbols of the data are interleaved separately in a case that the partial precoder information is periodically reported.
This invention relates to wireless communication systems, specifically improving the efficiency of precoder feedback in uplink transmissions between a terminal apparatus and a base-station apparatus. The problem addressed is optimizing the reporting of precoder information to enhance data transmission performance while minimizing overhead. The base-station apparatus transmits control information to schedule a Physical Uplink Shared Channel (PUSCH) for uplink data transmission. The terminal apparatus then sends partial precoder information, which identifies at least one preferred precoder candidate from a predefined set, along with the uplink data on the PUSCH. The precoder information helps the base station adapt its transmission strategy for better signal quality. The method distinguishes between aperiodic and periodic reporting of precoder information. When reported aperiodically, modulation symbols of the precoder information and data are jointly interleaved to ensure efficient multiplexing. For periodic reporting, the modulation symbols are interleaved separately to maintain distinct processing. This dual approach balances feedback granularity and overhead, improving overall system efficiency. The invention enhances uplink communication by dynamically adjusting precoder feedback mechanisms based on reporting frequency.
Unknown
January 9, 2018
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